Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Operating activities:
Net loss	$ (4,163,008)	$ (2,378,594)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization and depreciation	230,630	226,027
Common stock issued for amended license agreement		400,000
Issuance of common stock to employee	10,000	20,500
Common stock issued in exchange for services	21,000	26,184
Warrants replaced in exchange for renegotiated agreement	429,902
Stock-based compensation	462,170	715,805
Capitalized patent write-off		88,727
Change in operating assets and liabilities:
Grants receivable	23,165	(241,686)
Taxes receivable	574,157	(322,293)
Prepaid expenses	55,069	(8,268)
Accounts payable	(179,053)	(370,620)
Accrued compensation	(99,565)	(107,520)
Total adjustments	1,527,475	426,856
Net cash used in operating activities	(2,635,533)	(1,951,738)
Investing activities:
Acquisition of intangible assets		(151,086)
Purchase of office equipment	(4,755)	(1,578)
Net cash used in investing activities	(4,755)	(152,664)
Financing activities:
Net proceeds from sale of common stock
Settlement of broker fees associated with 2010 financing		40,743
Proceeds from sale of common stock pursuant to equity line		355,000
Proceeds from exercise of options and warrants		253,613
Net cash provided by financing activities		649,356
Net decrease in cash and cash equivalents	(2,640,288)	(1,455,046)
Cash and cash equivalents at beginning of period	5,996,668	7,451,714
Cash and cash equivalents at end of period	3,356,380	5,996,668
Supplemental information:
Cash paid for state income taxes	$ 2,730	$ 2,750